osu-lazer/osu.Game/Users/UserCoverBackground.cs

// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE

using System;
using System.Threading.Tasks;
using osu.Framework.Allocation;
using osu.Framework.Graphics.Sprites;
using osu.Framework.Graphics.Textures;

namespace osu.Game.Users
{
    public class UserCoverBackground : Sprite
    {
        private readonly User user;

        public UserCoverBackground(User user)
        {
            this.user = user;
        }

        [BackgroundDependencyLoader]
        private async Task load(TextureStore textures)
        {
            if (textures == null)
                throw new ArgumentNullException(nameof(textures));

            if (!string.IsNullOrEmpty(user.CoverUrl))
                Texture = await textures.GetAsync(user.CoverUrl);
        }
    }
}